Mechanism for effecting normal and reverse plating



Sept, 1, I A ET AL MECHANISM FOR EFFECTING NORMAL AND REVERSE PLATINGFiled fan. 9, 1929' s Sheets-Sheet 1 I nveni/o ms J0 YwWJLQ/ws o n,ROEeWZHLawQOW,

]Sept. 1, 1936. J. LAWSON ET AL MECHANISM FOR EFFECT ING NORMAL ANDREVERSE PLATING Filed Jan. 9, 1929 a Sheets-Sheet 2 zibhrir/Lawso n,lZoberi/flllcgwson,

' Sept. 1,1936. I JiLAwsQN ET A I 2,052,776

I MEQHANISM FOR EFFECTING NORMAL AND REVERSE PLATING Filled Jan. 9, 19293 Sheets-Sheet s nioius Jbzv ii/Laweson, Zwri HLaws an,

i -YM ax Patented Sept. 1, 1936 UNITEDSTATES PATENT OFFICE lVIECHANISMFOR EFFECTING NORMAL AND REVERSE PLATING John Lawson and Robert H.Lawson, Pawtucket, R. I., assignol's to Hemphill Company, Central Falls,R. I., a corporation of Massachusetts Application January 9, 1929,Serial No. 331,192 1 Claim. (01. 66-3 6) 1 This invention relates tomechanism for and have chosen to disclose the normal plating asprocessor efiecting normal and reverse plating, effected by needlemovement and that is the the normal plating being herein disclosed asefpreferred manner of operation. fected by needle ideflection and thereverse Our invention may be applied to any type of plating being hereindisclosed efiected through independent needle knitting machine, but wethe cooperation of sinker or like instrumentalihave represented the sameas applied to a cirties. cular hosiery knitting machine of the latchnee- In order that the principle of the invention dle type and haveselectedfor illustration a Banmay be' readily understood, we havedisclosed in ner knitting machine without, however, limiting 10 theaccompanying drawings a single embodiment ourselves thereto. 10 of meansfor practicing the invention. The Banner machine to which our inventionIn said drawings, is here disclosed as applied is of the general typeFig. 1 is .a plan view .of the sinker or web shown in the U. S. patentto H p l N0. 933,- holder bed ring and showing in horizontal sec- 443,and shown also in U. S. patent to Robert H. tion the cams of the sinkercam ring, the top Lawson, Reissue No. 16,584, April 5, 1927. plate ofsaid ring being removed; 7 The machine is provided with needle cylinderFig. 2 is a vertical central section upon the line I that may be of theusual construction but if 22 of Fig. 1 and looking in the direction ofthe desired the upper part of the needle grooves 2 arrows on saidfigure; may be suficiently inwardly enlarged or deepened Fig. 3 is adetail in vertical section upon an to permit sufiicient inward movementof the nee- 20 enlarged scale on the line 3-3 of Fig. 1, and dies. Theneedles are represented at 3 and while showing one of the severalsinkers or like instruwithin the scope of the invention they may be'mentalities and the adjacent needle at a period of any type, they arepreferably provided with in the operation somewhat prior to the castinghooks i and latches 5. The needle cy is on point, in the efiecting ofthe reverse plating; desirably of the revolving type, though obviously25 Fig, 4 is a, view imilar to Fig, 3, on the line Y the invention isnot limited in this respect. We 4& of Fig. 1, but representing theposition of y p e a Slight b d in the n d Stems the parts atsubstantially the casting off point as indicated n t O-pe d g app of inreverse plating; Lawson and Cloutier, Serial No. 184,576 filed AprilFig. 5 is a view similar to Fig. 4 but represent- 1927, so as to renderthe needles ufii n ly 30 ing the relative position of a needle and asinker Dr ngy for the pu intendedi slightly prior to the deflection ofsaid needle to The web holder bed rin is d ca ed at 6 and effect regularplating; and v the cap or cam ring is indicated atl. The sink- Fig. 6 isa view similar to Fig. 5 but represente r w holders may be d e irab y al r v ing the continuation of the movement for normal Of a p l yp thoughWithin e pe and plating, about to be initiated in Fig. 5. purpose of.our invention some of the sinkers may In accordance with our invention,we effect be of a'usual type, as, for example, if normal normal platingby slight, so-called, deflected Plating is always to occur thereat. Asstated, movement of selected or predetermined needles pr er ly n asherein indicated, all h nkers 40 transversely of the needle series andwe effect a o Special typ d W v chosen to repm- 40 reverse plating bycooperative movement of sinke t t pe yp Shown in Figs- 2 t0 6 iners orlike special instrumentalities without deelusive. Therein the body of tsinkers iS pflective needle movement. More broadly stated, resented atthe lower nib at the pp nib we feed two yarns in a plating relation andwe at Ifi, the throat at H, the base portion of the effect both normalplating and reverse plating, sinker at 12, and the upstanding butt atI3. The 45 one of said types of plating being effected butts l3 may inthe simplest form of the inventhrough needle deflection and the othertype of tion be of all the same length, but different plating beingeffected through the cooperation of lengths may be employed upondifierent sinkers sinkers or like special instrumentalities, but ourwhen employing different cams to act upon invention is not limited tonormal plating as difierent sinkers. In the disclosed embodiment 50effected by needle deflection, and reverse plating of the invention,however, the butts l3 are inas effected by sinker cooperation becausewithin tended to be acted upon by the regular cam as the broad scope andpurpose of our invention indicated at I4 in Fig. 1 for effecting thecasting both normal and reverse plating may be otherofi and thereforeall of the butts may be of the wise effected than as herein shown.Herein we same length. Preferably we employ a guide or 55 holding ringl5, which is mounted upon the extreme top of the needle cylinder l, andis provided with an annular recess l6 which receives the inner ends H ofthe base portion of the sinkers as well as a needle deflectinginstrumentality I 8 to be hereinafter referred to. Said ring I5 isdesirably not provided with radial recesses,

but instead the annular recess 16 is circumferen tially continuous, andserves not only to guide the inner ends of the sinkers 8, but also theinner ends of the needle deflecting instrumentalities l8.

Each sinker or each special sinker'B is pro-;

vided with an inclined outer edge l9 downwhich one or it may be both ofthe yarns move in effecting reverse plating in a manner, disclosed inFigs.

9 and 10 of our Canadian :Patent.No..275,9D5,'..

dated November 29, 1927. Desirably both of the threads pass down therear edge 19 in the manner fully described in that patent.

The sinker cam ring, as shown most clearly in Fig. 1, is provided withan inner pathway 20 formed "between an inner circumferential camformation 2| having 'a cam 2| and an intermediate circumferential camjformation 22. There are also provided an intermediate cam pathway 23formed between the circumferentially extending cam formation 22 and anouter [cam formation 24 that extends only part way about the sinkerhead; and also anouter pathway 2d which is outside of the cam formation24 where the same exists,'and extends about the entire circumference ofthe sinker cam ring. The intermed'ate cam formation 22 is provided withthe incline I 4 already referred to and the knitting point is indicatedby the shoulder 25. The

' butts l3 of the sinkers are all received'within the saidcircumferential pathway 26.

The needle deflecting instrumentalities I81 are preferably in numberequal to the needles 3, being one for each needle. Desirably theyrespectively underlie the sinkers l2. as indicated in Figs. 2 to 6 andthey have laterally bent inner ends 26, which, when they engage theneedles, deflect the same very slightly outwardly as indicatedin Fig. 6,so as to insure the effecting of normal plating. In order to move thesaid instrumentalities in and out, they are provided with butts 2l whichat different stages of the op- "eration of the machine travel in theouter pathway24;

As shown in Fig. 3, the sinkers 8 receive their reverse plating"movements not through the -agency of 'a cam formation acting upon thebutts 1'3, but through the agency of the needle deflect- "inginstrumentalities l8.

To that end said needle deflecting instrumentalities are provided eachwith a shoulder 23 which at the proper time impacts upon the end 29 ofits sinker 8 and so moves the same inwardly as indicated in Fig. 3..

At such time the butt 2? of the needle deflecting instrumentality I 8 inquestion travels in the intermediate groove 23. Viewing Fig. 1 it willbe observed that when the needle deflecting instrumentalities l8 travelalong the intermediate groove 23 the shoulders 28 through their impact Hwith the-ends 29 of the sinkers 8 that effect reverse plating so movesaid sinkers inwardly that the two yarns are reversed in position asthey move down the inclined sloping edge l9 and the V stitch which isthus reversed is cast ofi at or near the lower end of said inclined edgel9. At other times the said butts 2! travel in the outer pathway 24' andthe cam formation of that pathway is such that at the proper time thesame causes the inner bent end 26 of the instrumentality l8 to engagethe back of the stem of the needle as represented in Fig. 6 and move theneedle very slightly outward but sufliciently to change from reverseplating to nyrmal plating. When reverse plating is to beresume'd, theproper sinkers 8 are moved inwardly in the special manner described soas to cause one or both of the threads to pass down the back of thesinkers.

The two threads are fed in a plating relation in a manner not necessaryfully to describe, but desirably that disclosed in the H. Lawson,Reissue No. 16,584. 7

Having thus described one illustrative embodiment of the invention, andthe best mode known to us for carrying out the process of the invention,

it is to be understood that although specific terms are employed, theyare used in ageneric and descriptive sense and'not for purposes oflimita- We claim:

chine wherein two yarns are fed in a plating relation, a needle cylinderhaving at the upper end thereof a guide ring having a circumferentialrepatent to Robert In'a circular, independent needle knitting'inacess, acircular series of needles, a series of special.

sinker like instrumentalities for all'the needles respectively, and aseries of needle deflecting instrumentalities for all the needlesrespectively, the inner ends of said sinkers and needle deflectinginstrumentalities being received in operation in said recess, and meansfor manipulatingsaid sinkersand said needle deflecting mstrumentalitiesin timed relation with the needles, so as 'to effect both reverse andnormal plating;

JOHN LAWSON. ROBERT I-I. LAWSON.

